Engineering CAD Design Library

Browse quality-checked 3D CAD models for engineering, product design, prototyping and manufacturing. Preview models online and download files in STEP, STP, IGES, STL, OBJ, PLY, DWG, DXF and more.

All3D PrintingAerospaceArchitectureAutomotiveAviationChemicalConstructionElectricalEnergy And PowerIndustrial DesignJewelleryMachine designMarineMedicalMiscellaneousRobotics
10,000+ models2D drawings
Sort by:
Free
Freecad Para Iniciantes 153 1 | 3D CAD Engineering Model
MACHINE DESIGN · FREECAD PARA INICIANTES 153 1

Freecad Para Iniciantes 153 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Sk1 1593S 28Gz 1 | 3D CAD Engineering Model
MACHINE DESIGN · SK1 1593S 28GZ 1

Sk1 1593S 28Gz 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Practice 1 21 | 3D CAD Engineering Model
MACHINE DESIGN · PRACTICE 1 21

Practice 1 21 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Practice 2 10 | 3D CAD Engineering Model
MACHINE DESIGN · PRACTICE 2 10

Practice 2 10 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview

Need a CAD file that is not in the library?

Share your requirement and Marathon OS will match you with a vetted CAD designer for production-ready CAD files, edits and manufacturing documentation.

Get it Built
500+Projects Done
24 hrResponse
15+CAD Tools
Free
2 In 1 Print In Place Glasses Case 1 | 3D CAD Engineering Model
3D PRINTING · PRINT IN PLACE

2 In 1 Print In Place Glasses Case 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Practice 4 6 | 3D CAD Engineering Model
MACHINE DESIGN · PRACTICE 4 6

Practice 4 6 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview

Browse CAD models by file format

STEP CAD modelsSTL CAD modelsIGES CAD modelsOBJ 3D modelsPLY modelsDWG drawingsDXF drawings

Browse CAD models by category

Automotive CAD modelsAerospace CAD modelsRobotics CAD models3D printing CAD modelsArchitecture CAD modelsIndustrial design CAD modelsMedical CAD modelsElectrical CAD models
Free
Cmf Battle Grip 1 | 3D CAD Engineering Model
MACHINE DESIGN · CMF BATTLE GRIP 1

Cmf Battle Grip 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Sk5 021 1 | 3D CAD Engineering Model
MACHINE DESIGN · SK5 021 1

Sk5 021 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Feit Shop Light Canopy Tent Brackets 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · FEIT SHOP LIGHT CANOPY TENT BRACKETS

Feit Shop Light Canopy Tent Brackets 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Exercise 156 1 | 3D CAD Engineering Model
MACHINE DESIGN · EXERCISE 156 1

Exercise 156 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Double Holder For Wago 221 412 Horizontal Mount 1 | 3D CAD Engineering Model
ELECTRICAL · DOUBLE HOLDER

Double Holder For Wago 221 412 Horizontal Mount 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Maximum Bite Plant V2 1 | 3D CAD Engineering Model
3D PRINTING · MAXIMUM BITE PLANT V2 1

Maximum Bite Plant V2 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Weedeater Throttle Replacement 1 | 3D CAD Engineering Model
MACHINE DESIGN · WEEDEATER THROTTLE REPLACEMENT 1

Weedeater Throttle Replacement 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Gt2 6Mm Pully 5Mm Bore 1 | 3D CAD Engineering Model
MACHINE DESIGN · GT2 PULLEY

Gt2 6Mm Pully 5Mm Bore 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Spiral Shape 3 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · SPIRAL SHAPE 3

Spiral Shape 3 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Vertical Axis Wind Turbine 47 | 3D CAD Engineering Model
ENERGY AND POWER · VERTICAL AXIS WIND TURBINE 47

Vertical Axis Wind Turbine 47 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Apple Prototype Pc 1 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · APPLE PROTOTYPE PC 1

Apple Prototype Pc 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Spacer Adapter From Ullicyc Carbon Integrated Cockbpit Handlebar To Rose | 3D CAD Engineering Model
AUTOMOTIVE · SPACER ADAPTER

Spacer Adapter From Ullicyc Carbon Integrated Cockbpit Handlebar To Rose | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Ball Plunger Set 1 | 3D CAD Engineering Model
MACHINE DESIGN · BALL PLUNGER

Ball Plunger Set 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Fresa Topo Esferica R0 75 1 | 3D CAD Engineering Model
MACHINE DESIGN · FRESA TOPO ESFERICA R0 75 1

Fresa Topo Esferica R0 75 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Reverse Engineered Gear 1 | 3D CAD Engineering Model
MACHINE DESIGN · REVERSE ENGINEERED GEAR 1

Reverse Engineered Gear 1 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
Free
Tennis Bat 8 | 3D CAD Engineering Model
INDUSTRIAL DESIGN · TENNIS BAT 8

Tennis Bat 8 | 3D CAD Engineering Model

.STEP
Open STEP file viewerConvert STEP to STL
<100 downloads
Preview
prev...270271272273274...next
Marathon OS logoThe CAD marketplace for modern teams
HomeAbout usWhy us?Contact us
Tools3D to 2D Drawing Pipeline3D CAD Viewer3D CAD File Converter
Library
Hire CAD Designers
Production-ready in 24 hrs
👤
→
2D Library
Ask a question
Privacy Policy|Terms of Service|Refund Policy|
© Marathon 2025 All Rights Reserved